Triphenylbis(fluoroalkoxy) phosphoranes and fluorinated ketals

Abstract

Novel triphenylbis(fluoroalkoxy)phosphoranes and a process for their preparation are disclosed. Also disclosed is a process for making fluorinated ketals by reacting phosphoranes with fluorinated ketones.

What is claimed is: 
     
       1. A compound of the formula Ar 3  P(OCH 2  Rf) 2 , wherein Ar is Ph or substituted Ph, and R f  is selected from straight chain or branched perfluoroalkyl, perfluoroalkenyl, perfluoroalkynyl, perfluoroalkoxy, perfluoroalkenoxy, perfluorochloroalkyl, perfluorochloroalkenyl, perfluorochloroalkynyl, perfluorochloroalkoxy, perfluorochloroalkenoxy, fluoroalkyl, fluoroalkenyl, fluoroalkynyl, fluoroalkoxy, fluoroalkenoxy, fluorochloroalkyl, fluorochloroalkenoxy, fluorochloroalkynyl, fluorochloroalkoxy, and fluorochloroalkenoxy, of 1-20 carbon atoms, provided, however, that R f  is not CF 3 . 
     
     
       2. The compound described by claim 1 wherein R f  is selected from CF 2  Cl, CF 2  CF 3 , CFClCF 2  Cl, and CF 2  ═CFOCF 2  CF(CF 3 )OCF 2  CF 2 .